Variable Config
ID: I_image_config
Section: image_sections[image_chooser]
Option: I_image_correct
Write Back: I_Gain
GUI Range
ID: I_Gain
Default: I_image_config
I found a question similar to this one on the forum but no one answered it
so I hope I can get a response to this one.
I have shown above my configuration for two blocks in my flowgraph.
I wish to write to and read from an INI file with 5 sections.
I can successfully write the value of I_Gain to I_image_correct in a single
section when I make an adjustment to the I_Gain Range control. I want to use a
Chooser with the ID: image_chooser to select another section to write a value of
I_Gain to that section. However, the Chooser callback writes the current value
of I_Gain immediately to the file without my making a change to I_Gain. This is
a major problem if I wish to select a Section that I had already stored a value
in. Whatever the current value of I_Gain happens to be is written to the
Section. For example: I change I_Gain to 1.1 for Section 40. I then select
Section 80 which immediately upon selection has 1.1 written to it. I then select
I_Gain = 1.5 which stores that value in Section 80. I then select Section 40 in
hopes of using I_Gain = 1.1 but find that in the process of selection the value
of I_Gain has changed to 1.5. This makes no sense since it defeats the purpose
of saving a configuration in a file.
How do I save parameters to different sections without the sections being
overwritten?
The other main issue is how do I read from the file so that I can set
I_Gain when the Section is selected? I don’t see how to do this. The only time I
have seen the file read is on initialization. I presume this is due to the fact
that I set the default value of I_Gain to I_image_config. I need to to be able
to read a value on demand.
By the way, I have 3 parameters to save and recall in each of 5
Sections.
Any help will be greatly appreciated. I have been wrestling with this issue
for quite some time.